You watched from the side as Amarantha broke Feyre's bones...you thought that since Feyre had completed three challenges, Amarantha would lift the curse immediately and not in 100 or more years. Feyre got angry that her work was in vain because she almost died in the process, she threatened to kill Amarantha for her sake and well...Amarantha would probably kill Feyre first and not the other way around.

you think: "well, that's messed up"

You see Rhysand sneaking up behind Amarantha. He picks up a dagger from the ground from the oak to kill her...it's so close, almost. You'll be free soon-...No! Amarantha, without even looking at Rhys, threw him and the wall with her power and again...again...and again until he fell to the ground. It happened too fast...

Rhysand tried to get up on shaking arms but he couldn't...he was injured and clearly in pain.